Convertible lamp.



F. D. SPEAK.

CONVERTIBLE LAMP.

APPLICATION FILED DBO. 27, 1910.

1,018,017. Patented'Feb. 20, 1912.

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COLUMBIA PLANOGRAPH 011-, WASHINGTON, n- C.

F. D. SPBAR.

CONVERTIBLE LAMP.

APPLIOATION FILED DEC. 27, 1910.

1,018,017. Patented Feb. 20, 1912.

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COLUMBIA PLANOGRAPH $0.. WASHINGTON, n. C.

UNITED STATES PATENT OFFICE.

FURMAN n. smart, on NEW YORK, N. Y., ASSIGNOR 'ro ARMSPEAR MANUFACTURINGCOMPANY, or NEW YORK, 1v. Y.

CONVERTIBLE LAMP.

Specification of Letters Patent.

Application filed December 27, 1910.

To all whom it may concern:

Be it known that I, FURMAN D. SPEAK, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented a new and useful Improvement in Convertible Lamps, ofwhich the following is a specification.

This invention relates to that class of signal'lamps which are soconstructed that an electric light or an oil lamp can be usedinterchangeably as illuminating means, and the invention has the objectto construct the upper portion of the lamp in such manner that simple,eflicient and convenient means are provided for holding the electriclight removably in position in the lam and that air is properly suppliedto the oil lamp for supporting combustion.

In the accompanying drawings, consisting of two sheets: Figure 1 is asectional elevation showing the lamp with the electric light in positionin the same. Fig. 2 is a sectional elevation of the upper portion of thelamp with the hinged top partly raised. Fig. 3 is a bottom plan view ofthe hinged top. Fig. 4 is a top plan view of the body of the lamp. Fig.5 is a sectional elevation showing the electric light removed and theoil lamp arranged for use. Figs. 6 and 7 are sectional elevations of theupper portions of lamps containing modified embodiments of theinvention.

Like reference characters refer to like parts in the several figures.

Referring to Figs. 1-5, 10 represents the upright wall of the body ofthe lamp and 11 the breast extending upwardly and inwardly from thiswall and carrying at its upper end a cylindrical collar 12. The bottom13 of the body supports the oil pot 14: from which the burner 15 isremoved when the electric light is used, as represented in Fig. 1. 16represents a perforated annular plate which is arranged horizontally ortransversely upon the top collar 12 of the body and is provided with acylindrical wall 17 extending downwardly from the inner edge of theannular plate and with a downwardly flaring curtain 18 depending fromthe wall 17. The latter is provided at its lower end with an inwardlyprojecting ledge, shoulder or flange 19. The outer edge of the annularplate 16 is bent downlamp which is movably attached to the lamp J body,preferably on one side by a hinge 21 and on the other side by a hasp orlatch 22 and turn button 23. The skirt 24 of the top fits around thecollar 12 of the body and is provided with air inletppenings 2 5. Thehinged top is further provided in its lower portion with an internalretaining collar 26 which extends downwardly from the upper and innerportion of the skirt 24 and bears upon or stands over the perforatedplate 16 and has at its lower end a flange 27 which projects inwardlybeyond the inner edge of the annular plate. 28 represents a circularbase plate for supporting an electric light bulb 29 which depends fromthe under side of the plate and is secured thereto by a socket 30. Thisbase plate is preferably provided with openings 31 for ventilation. 32represents the conducting wires which may pass through the opening 33underneath the cap 34 of the hinged top or be arranged in any othersuitable manner. The base plate 28 is of such size that it fits withinthe cylindrical wall 17 attached to the perforated plate 16 and restsupon the supporting flange 19 at the lower end thereof, as representedin Figs. 1 and 2. The cylindrical wall 17 and its supporting flange 19form a seat for the base plate 28 on which the latter is removably heldby the retaining collar of the hinged lamp top.

When the hinged top is closed, as represented in Fig. 1, the flange 27at the lower end of the retaining collar 26 stands over the perforatedplate 16 and over the marginal portion of the base plate 28 and holdsthese plates securely in position. Upon raising the hinged top from thebody, as indicated in Fig. 2, the base plate 28 and the electric lightattached thereto can be re-- the interior of the lamp body and supportsthe flame of the oil lamp, when the latter is used. When the electriclight is in use the heated air escapes from the lamp body through theopenings 31 in the base plate 28 and passes through the hinged top fromwhich it escapes in the usual way. lVhen the oil lamp is in use thespace within the cylindrical wall 17 is unobstructed, as represented inFig. 5, and the heated air and products of combustion pass upwardlythrough this space into the top and escape from the latter underneaththe cap thereof. The top is provided with an upwardly tapering chimneyor draft tube 35 and an internal deflecting collar 86, both extendingupwardly from the retaining collar 26. These parts form in connectionwith the retaining collar 26, cylindrical wall 17 and curtain 18, anascending escape passage which is divided at the level of the perforatedplate 16 and base plate 28 for permitting the introduction and removalof the base plate.

In the construction represented in Fig. 6, the base plate 37 of theelectric light is provided with an external flange 38 by which it restsupon the transverse plate 16 and the retaining collar 39 of the topstands over' the transverse plate outside of this flange. In thisconstruction the base plate is not positively held against displacementin an upward direction, and this is not necessary in lamps which are notsubjected to violent movements.

In the construction represented in Fig. 7 the base plate 37 isconstructed and supported as in Fig. 6, but the retaining collar 40 ofthe top stands not only over the transverse plate but is provided withan offset or shoulder 11 which projects inwardly over the base plate andsecures the latter against upward movement.

In the several forms of this improved lamp herein shown the outletpassage for the products of combustion is divided ap proximately at thelevel of the transverse air-inlet plate, and the base plate for theelectric light, when used, rests removably in or on the seat formed orsupported by this plate.

I claim as my invention:

1. The combination with a lamp body, of a perforated annular platesupported transversely in the upper portion of the body and providedwith a seat for the base plate of an electric light, a base plateresting on said seat and provided with means for carrying an electriclight, and a movable lamp top which is movable toward and from saidperforated plate, substantially as set forth.

2. The combination with a lamp body, of an annular perforated platesupported with, of an annular perforated plate supported on said bodyand provided with a seat for the base plate of an electric light, anescape passage formed in said body and top and divided approximately atthe level of said perforated plate, said passage comprising a portionarranged in and carried by said body below said perforated plate and aportion arranged in said top above said plate, said top being movabletoward and from said perforated plate, and a base plate for an electriclight arranged removably on said seat, substantially as set forth.

at. The combination with a lamp body provided in its upper portion withan annular perforated plate and an inner upright wall which is providedwith an inwardly projecting supporting shoulder, of a base platearranged within said wall and resting upon said shoulder, said baseplate being provided with means for carrying an electric light, and amovable lamp top, substantially as set forth.

5. The combination with a lamp body provided in its upper portion withan annular perforated plate having an inner upright wall which isprovided with an inwardly projecting supporting shoulder, of a baseplate arranged within said wall and resting upon said shoulder, saidbase plate being provided with means for carrying an electric light, anda movable lamp top provided with a lower portion which stands over saidbase plate when the top is closed and prevents displacementthereof,substantially as set forth.

6. The combination with a lamp body provided in its upper portion with adepressed seat for supporting the base plate of an electric light, of abase plate resting in said seat and having means for carrying anelectric light, and a movable top having a downwardly extendingretaining collar which stands over said base plate when the top isclosed, substantially as set forth.

7. The combination with a lamp body provided in its upper portion withan an nular perforated plate having an inner upright wall which isprovided with an inwardly projecting supporting shoulder, of a baseplate arranged within said wall and resting upon said shoulder, saidbaseplate Witness my hand in the presence of two being provided withnleanbs1 for carrying an subscribing witnesses. electric light, and amova e lamp top provided with a downwardly extending retain- FURMANSPEAK ing collar which stands over said perforated Witnesses:

plate and said base plate when the top is J. STANTON,

closed, substantially as set forth. CH. FREEMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. O.

